Feat(xo-server): implement Api for esxi migration UX

[fbeauchamp]

review by commits

• add new method exxi.listVms({host, user, password, sslVerify=true}) to api
  this will return

[
  {
    "id": "1",
    "nameLabel": "test_linux",
    "memory": 2147483648,
    "nCpus": 1,
    "guestToolsInstalled": false,
    "firmware": "bios",
    "powerState": "poweredOff",
    "storage": {
      "used": 216761,
      "free": 2318061568
    }
  },
  {
    "id": "2",
    "nameLabel": "test_small",
    "memory": 2147483648,
    "nCpus": 1,
    "guestToolsInstalled": false,
    "firmware": "bios",
    "powerState": "poweredOff",
    "storage": {
      "used": 10696,
      "free": 2586497520
    }
  },
  {
    "id": "4",
    "nameLabel": "test flo",
    "memory": 1073741824,
    "nCpus": 2,
    "guestToolsInstalled": false,
    "firmware": "bios",
    "powerState": "poweredOff",
    "storage": {
      "used": 6860092734,
      "free": 35570518969
    }
  },
  {
    "id": "8",
    "nameLabel": "damnsmalllinux",
    "memory": 268435456,
    "nCpus": 1,
    "guestToolsInstalled": false,
    "firmware": "bios",
    "powerState": "poweredOff",
    "storage": {
      "used": 154318782,
      "free": 553288173
    }
  },
  {
    "id": "9",
    "nameLabel": "miniubuntu",
    "memory": 2147483648,
    "nCpus": 3,
    "guestToolsInstalled": false,
    "firmware": "bios",
    "powerState": "poweredOn",
    "storage": {
      "used": 7720281547,
      "free": 8588887706
    }
  },
  {
    "id": "10",
    "nameLabel": "ubuntu2",
    "memory": 2147483648,
    "nCpus": 4,
    "guestToolsInstalled": false,
    "firmware": "bios",
    "powerState": "poweredOn",
    "storage": {
      "used": 6132889490,
      "free": 8555332434
    }
  },
  {
    "id": "20",
    "nameLabel": "windows",
    "memory": 2147483648,
    "nCpus": 1,
    "guestToolsInstalled": false,
    "firmware": "uefi",
    "powerState": "poweredOff",
    "storage": {
      "used": 1971,
      "free": 36662014449
    }
  }
]

memoy, used, and free are in bytes

Check list

Check if done, if not relevant leave unchecked.

• PR reference the relevant issue (e.g. Fixes #007 or See xoa-support#42)
• if UI changes, a screenshot has been added to the PR
• documentation updated
• CHANGELOG.unreleased.md:
  • enhancement/bug fix entry added
  • list of packages to release updated (${name} v${new version})
• I have tested added/updated features (and impacted code)
  • unit tests (e.g. cron/parse.spec.js)
  • if xo-server API changes, the corresponding test has been added to/updated on xo-server-test
  • at least manual testing

Process

1. create a PR as soon as possible
2. mark it as WiP: (Work in Progress) if not ready to be merged
3. when you want a review, add a reviewer (and only one)
4. if necessary, update your PR, and re- add a reviewer

From the Four Agreements:

1. Be impeccable with your word.
2. Don't take anything personally.
3. Don't make assumptions.
4. Always do your best.

[julien-f]

I have:

• rebased this branch on top of master
• rewrote commit history
• fixed a small issue in api/esxi.mjs

Please check everything is in order and I'll merge it.